    <div class="refentry" id="glVertexAttribFormat">
      <div class="titlepage"></div>
      <div class="refnamediv">
        <h2>Name</h2>
        <p>glVertexAttribFormat — specify the organization of vertex arrays</p>
      </div>
      <div class="refsynopsisdiv">
        <h2>C Specification</h2>
        <div class="funcsynopsis">
          <table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
            <tr>
              <td>
                <code class="funcdef">void <strong class="fsfunc">glVertexAttribFormat</strong>(</code>
              </td>
              <td>GLuint <var class="pdparam">attribindex</var>, </td>
            </tr>
            <tr>
              <td> </td>
              <td>GLint <var class="pdparam">size</var>, </td>
            </tr>
            <tr>
              <td> </td>
              <td>GLenum <var class="pdparam">type</var>, </td>
            </tr>
            <tr>
              <td> </td>
              <td>GLboolean <var class="pdparam">normalized</var>, </td>
            </tr>
            <tr>
              <td> </td>
              <td>GLuint <var class="pdparam">relativeoffset</var><code>)</code>;</td>
            </tr>
          </table>
          <div class="funcprototype-spacer"> </div>
        </div>
        <div class="funcsynopsis">
          <table style="border: 0; cellspacing: 0; cellpadding: 0;" class="funcprototype-table">
            <tr>
              <td>
                <code class="funcdef">void <strong class="fsfunc">glVertexAttribIFormat</strong>(</code>
              </td>
              <td>GLuint <var class="pdparam">attribindex</var>, </td>
            </tr>
            <tr>
              <td> </td>
              <td>GLint <var class="pdparam">size</var>, </td>
            </tr>
            <tr>
              <td> </td>
              <td>GLenum <var class="pdparam">type</var>, </td>
            </tr>
            <tr>
              <td> </td>
              <td>GLuint <var class="pdparam">relativeoffset</var><code>)</code>;</td>
            </tr>
          </table>
          <div class="funcprototype-spacer"> </div>
        </div>
      </div>
      <div class="refsect1" id="parameters">
        <h2>Parameters</h2>
        <div class="variablelist">
          <dl class="variablelist">
            <dt>
              <span class="term">
                <em class="parameter">
                  <code>attribindex</code>
                </em>
              </span>
            </dt>
            <dd>
              <p>
                    The generic vertex attribute array being described.
                </p>
            </dd>
            <dt>
              <span class="term">
                <em class="parameter">
                  <code>size</code>
                </em>
              </span>
            </dt>
            <dd>
              <p>
                    The number of values per vertex that are stored in the array.
                </p>
            </dd>
            <dt>
              <span class="term">
                <em class="parameter">
                  <code>type</code>
                </em>
              </span>
            </dt>
            <dd>
              <p>
                    The type of the data stored in the array.
                </p>
            </dd>
            <dt>
              <span class="term">
                <em class="parameter">
                  <code>normalized</code>
                </em>
              </span>
            </dt>
            <dd>
              <p>
                    Specifies whether fixed-point data values should be normalized (<code class="constant">GL_TRUE</code>) or
		    converted directly as fixed-point values (<code class="constant">GL_FALSE</code>) when they are accessed. This parameter is ignored if <em class="parameter"><code>type</code></em> is <code class="constant">GL_FIXED</code>.
                </p>
            </dd>
            <dt>
              <span class="term">
                <em class="parameter">
                  <code>relativeoffset</code>
                </em>
              </span>
            </dt>
            <dd>
              <p>
                    An offset to the first element relative to the start of the vertex buffer binding.
                </p>
            </dd>
          </dl>
        </div>
      </div>
      <div class="refsect1" id="description">
        <h2>Description</h2>
        <p>
            <code class="function">glVertexAttribFormat</code> and <code class="function">glVertexAttribIFormat</code>
                        specify the organization of data in vertex arrays.
            <em class="parameter"><code>attribindex</code></em> specifies the index of the generic vertex attribute
            array whose data layout is being described, and must be less
            than the value of <code class="constant">GL_MAX_VERTEX_ATTRIBS</code>.
        </p>
        <p>
            <em class="parameter"><code>size</code></em> determines the number of components per vertex are allocated
            to the specifed attribute and must be 1, 2, 3 or 4. <em class="parameter"><code>type</code></em> indicates
            the type of the data. If <em class="parameter"><code>type</code></em> is one of <code class="constant">GL_BYTE</code>,
            <code class="constant">GL_SHORT</code>, <code class="constant">GL_INT</code>, <code class="constant">GL_FIXED</code>,
            <code class="constant">GL_FLOAT</code> and <code class="constant">GL_HALF_FLOAT</code>
                        indicate types <code class="code">GLbyte</code>, <code class="code">GLshort</code>,
            <code class="code">GLint</code>, <code class="code">GLfixed</code>, <code class="code">GLfloat</code>, and <code class="code">GLhalf</code>
                        respectively; the values <code class="constant">GL_UNSIGNED_BYTE</code>,
            <code class="constant">GL_UNSIGNED_SHORT</code>, and <code class="constant">GL_UNSIGNED_INT</code> indicate types
            <code class="code">GLubyte</code>, <code class="code">GLushort</code>, and <code class="code">GLuint</code>,
            respectively; the values <code class="constant">GL_INT_2_10_10_10_REV</code> and
            <code class="constant">GL_UNSIGNED_INT_2_10_10_10_REV</code> indicating respectively four signed or
            unsigned elements packed into a single <code class="code">GLuint</code>.
        </p>
        <p>
            For <code class="function">glVertexAttribFormat</code>, if <em class="parameter"><code>normalized</code></em> is
            <code class="constant">GL_TRUE</code>, then integer data is normalized to the range [-1, 1] or
            [0, 1] if it is signed or unsigned, respectively. If <em class="parameter"><code>normalized</code></em> is
            <code class="constant">GL_FALSE</code> then integer data is directly converted to floating point.
        </p>
        <p>
            <em class="parameter"><code>relativeoffset</code></em> is the byte offset of the first element relative
			to the start of the vertex buffer binding this attribute fetches from.
        </p>
        <p>
            <code class="function">glVertexAttribFormat</code> should be used to describe vertex attribute
            layout for floating-point vertex attributes and <code class="function">glVertexAttribIFormat</code>
            should be used to describe vertex attribute layout for integer vertex attributes.
                        Data for an array specified by <code class="function">glVertexAttribIFormat</code> will always be
                        left as integer values; such data are referred to as pure integers.
        </p>
      </div>
      <div class="refsect1" id="errors">
        <h2>Errors</h2>
        <p>
            <code class="constant">GL_INVALID_VALUE</code> is generated if <em class="parameter"><code>attribindex</code></em> is greater than
            or equal to the value of <code class="constant">GL_MAX_VERTEX_ATTRIBS</code>.
        </p>
        <p>
            <code class="constant">GL_INVALID_VALUE</code> is generated if <em class="parameter"><code>size</code></em> is not
            one of the accepted values.
        </p>
        <p>
            <code class="constant">GL_INVALID_VALUE</code> is generated if <em class="parameter"><code>relativeoffset</code></em> is greater
            than the value of <code class="constant">GL_MAX_VERTEX_ATTRIB_RELATIVE_OFFSET</code>.
        </p>
        <p>
            <code class="constant">GL_INVALID_ENUM</code> is generated if <em class="parameter"><code>type</code></em> is not
            one of the accepted tokens.
        </p>
        <p>
            <code class="constant">GL_INVALID_OPERATION</code> is generated if no vertex array object is bound.
        </p>
      </div>
      <div class="refsect1" id="associatedgets">
        <h2>Associated Gets</h2>
        <p>
            <a class="citerefentry" href="glGet"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a> with arguments <code class="constant">GL_MAX_VERTEX_ATTRIB_BINDINGS</code>,
            or <code class="constant">GL_MAX_VERTEX_ATTRIB_RELATIVE_OFFSET</code>.
        </p>
        <p>
            <a class="citerefentry" href="glGetVertexAttrib"><span class="citerefentry"><span class="refentrytitle">glGetVertexAttrib</span></span></a> with argument <code class="constant">GL_VERTEX_ATTRIB_RELATIVE_OFFSET</code>.
        </p>
      </div>
      {$pipelinestall}{$examples}
      <div class="refsect1" id="versions">
        <h2>API Version Support</h2>
        <div class="informaltable">
          <table style="border-collapse: collapse; border-top: 2px solid ; border-bottom: 2px solid ; border-left: 2px solid ; border-right: 2px solid ; ">
            <colgroup>
              <col style="text-align: left; "/>
              <col style="text-align: center; " class="firstvers"/>
              <col style="text-align: center; "/>
              <col style="text-align: center; " class="lastvers"/>
            </colgroup>
            <thead>
              <tr>
                <th style="text-align: left; border-right: 2px solid ; ">

            </th>
                <th style="text-align: center; border-bottom: 2px solid ; " colspan="3">
                <span class="bold"><strong>OpenGL ES API Version</strong></span>
            </th>
              </tr>
              <tr>
                <th style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
                <span class="bold"><strong>Function Name</strong></span>
            </th>
                <th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
                <span class="bold"><strong>2.0</strong></span>
            </th>
                <th style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">
                <span class="bold"><strong>3.0</strong></span>
            </th>
                <th style="text-align: center; border-bottom: 2px solid ; ">
                <span class="bold"><strong>3.1</strong></span>
            </th>
              </tr>
            </thead>
            <tbody>
              <tr>
                <td style="text-align: left; border-right: 2px solid ; border-bottom: 2px solid ; ">
                  <code class="function">glVertexAttribFormat</code>
                </td>
                <td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">-</td>
                <td style="text-align: center; border-right: 2px solid ; border-bottom: 2px solid ; ">-</td>
                <td style="text-align: center; border-bottom: 2px solid ; ">✔</td>
              </tr>
              <tr>
                <td style="text-align: left; border-right: 2px solid ; ">
                  <code class="function">glVertexAttribIFormat</code>
                </td>
                <td style="text-align: center; border-right: 2px solid ; ">-</td>
                <td style="text-align: center; border-right: 2px solid ; ">-</td>
                <td style="text-align: center; ">✔</td>
              </tr>
            </tbody>
          </table>
        </div>
      </div>
      <div class="refsect1" id="seealso">
        <h2>See Also</h2>
        <p>
            <a class="citerefentry" href="glBindVertexBuffer"><span class="citerefentry"><span class="refentrytitle">glBindVertexBuffer</span></span></a>,
            <a class="citerefentry" href="glVertexAttribBinding"><span class="citerefentry"><span class="refentrytitle">glVertexAttribBinding</span></span></a>,
            <a class="citerefentry" href="glVertexAttribPointer"><span class="citerefentry"><span class="refentrytitle">glVertexAttribPointer</span></span></a>,
            <a class="citerefentry" href="glVertexBindingDivisor"><span class="citerefentry"><span class="refentrytitle">glVertexBindingDivisor</span></span></a>,
            <a class="citerefentry" href="glVertexAttribPointer"><span class="citerefentry"><span class="refentrytitle">glVertexAttribPointer</span></span></a>.
        </p>
      </div>
      <div class="refsect1" id="Copyright">
        <h2>Copyright</h2>
        <p>
            Copyright © 2012-2014 Khronos Group.
            This material may be distributed subject to the terms and conditions set forth in
            the Open Publication License, v 1.0, 8 June 1999.
            <a class="link" href="https://opencontent.org/openpub/" target="_top">https://opencontent.org/openpub/</a>.
        </p>
      </div>
    </div>
